I bought filters for my class A water system to replace my existing Waterpur canister filter. The filter is pretty much the same size, filtering down to the 5 micron spec I was looking for. The good thing is you get 4 filters for what would cost 1 1/2 Waterers. I haven't installed them yet as I just used the last filter I had, the side by side comparison is almost the same so I don't see a problem using them.
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